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Missing New York woman found dead

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Police suspect that she was killed at another location. They told CNN's sister network CNN Turk that the body of the 33-year-old Staten Island mother showed signs of stab wounds. But authorities said Sierra died from a blow to the head.

Turkish police have detained a Turkish man with whom she had been in contact, identified only by the first name Taylan, according to CNN Turk. Authorities have also collected DNA samples from 21 people, including three foreigners.

Her body has since been transferred to Istanbul's Ataturk Airport for a Thursday departure to New York. The medical examiner's office is expected to release the results of an autopsy in about three months.